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Built 2026-10-19 (19 October 2026)

Lancang Weather Records (CHM00056954)

Record envelope, standing records and threshold days for Lancang (CHM00056954), China, with 72 years of record.

Key Facts for Lancang

  • Lancang (CHM00056954) is a weather station in China at 22.57 latitude and 99.93 longitude, 1,054 m (3,458 ft) above sea level.
  • The station reports from 1954 to 2025, 72 years of record.
  • 1,464 records set at Lancang still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Lancang set a daily record high minimum temperature of 22.2 C (72.0 F) on 1 August 2025.

About the Station

  • Location: China, 22.57 latitude, 99.93 longitude.
  • Elevation: 1,054 m (3,458 ft).
  • Period of record: 1954 to 2025, 72 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

4 days at or beyond a record
Daily record high and record low at Lancang, with 2026 drawn through them The band shows the record high and record low for each calendar day at Lancang. The lines show the 2026 daily maximum and minimum. 4 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Lancang. The lines show the 2026 daily maximum and minimum. 4 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Lancang, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan29.4 C (84.9 F)-1.0 C (30.2 F)26.7 C (80.1 F)7.7 C (45.9 F)
Feb33.2 C (91.8 F)0.4 C (32.7 F)28.9 C (84.0 F)7.0 C (44.6 F)
Mar34.3 C (93.7 F)2.5 C (36.5 F)32.0 C (89.6 F)10.4 C (50.7 F)
Apr36.3 C (97.3 F)6.6 C (43.9 F)34.1 C (93.4 F)13.6 C (56.5 F)
May37.2 C (99.0 F)11.4 C (52.5 F)33.8 C (92.8 F)16.1 C (61.0 F)
Jun37.2 C (99.0 F)14.5 C (58.1 F)33.7 C (92.7 F)19.8 C (67.6 F)
Jul34.8 C (94.6 F)15.6 C (60.1 F)32.4 C (90.3 F)20.4 C (68.7 F)
Aug33.6 C (92.5 F)15.3 C (59.5 F)32.5 C (90.5 F)19.4 C (66.9 F)
Sep33.6 C (92.5 F)11.2 C (52.2 F)n/an/a
Oct33.0 C (91.4 F)7.3 C (45.1 F)n/an/a
Nov30.4 C (86.7 F)2.9 C (37.2 F)n/an/a
Dec29.3 C (84.7 F)-1.4 C (29.5 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Lancang by the year they were set 1,464 records at Lancang still stand. 1999 holds the most, with 51. 02040601954: 251955: 261956: 231957: 271958: 311959: 251960: 321961: 401962: 191963: 151964: 131965: 231966: 231967: 221968: 131969: 171970: 161971: 301972: 151973: 61974: 201975: 211976: 201977: 151978: 151979: 331980: 81981: 141982: 131983: 121984: 151985: 151986: 181987: 121988: 181989: 81990: 151991: 101992: 241993: 61994: 151995: 121996: 271997: 111998: 471999: 512000: 152001: 252002: 162003: 112004: 132005: 162006: 152007: 192008: 242009: 302010: 132011: 212012: 222013: 292014: 92015: 192016: 232017: 252018: 172019: 252020: 302021: 192022: 292023: 372024: 342025: 12195419621970197819861994200220102018
1,464 records at Lancang still stand. 1999 holds the most, with 51.
Standing records at Lancang by the year they were set
Year setStanding records
195425
195526
195623
195727
195831
195925
196032
196140
196219
196315
196413
196523
196623
196722
196813
196917
197016
197130
197215
19736
197420
197521
197620
197715
197815
197933
19808
198114
198213
198312
198415
198515
198618
198712
198818
19898
199015
199110
199224
19936
199415
199512
199627
199711
199847
199951
200015
200125
200216
200311
200413
200516
200615
200719
200824
200930
201013
201121
201222
201329
20149
201519
201623
201725
201817
201925
202030
202119
202229
202337
202434
202512

All-Time Record Progression

3 new records
When Lancang set new all-time records 3 all-time records were set at Lancang between 26 December 1999 and 8 October 2006. Each dot is a new record. Record low minimum temperatureRecord daily precipitation26 December 1999: Record low minimum temperature -1.1 C (30.0 F)27 December 1999: Record low minimum temperature -1.4 C (29.5 F)8 October 2006: Record daily precipitation 140.1 mm (5.5 in)20002005
3 all-time records were set at Lancang between 26 December 1999 and 8 October 2006. Each dot is a new record.
When Lancang set new all-time records
DateKindDetail
1999-12-26Record low minimum temperatureRecord low minimum temperature -1.1 C (30.0 F)
1999-12-27Record low minimum temperatureRecord low minimum temperature -1.4 C (29.5 F)
2006-10-08Record daily precipitationRecord daily precipitation 140.1 mm (5.5 in)

Wettest Day of Each Month

Oct: 140.1 mm (5.5 in)
Record daily precipitation for each month at Lancang The wettest day on record for each calendar month at Lancang. The most was 140.1 mm (5.5 in) on 8 October 2006. 050100150 Jan: 102.1 mm (4.0 in), 9 January 2015 Jan Feb: 30.7 mm (1.2 in), 25 February 2016 Feb Mar: 53.8 mm (2.1 in), 8 March 1973 Mar Apr: 53.8 mm (2.1 in), 29 April 1999 Apr May: 95.2 mm (3.7 in), 18 May 1970 May Jun: 134.6 mm (5.3 in), 22 June 1984 Jun Jul: 136.1 mm (5.4 in), 31 July 1958 Jul Aug: 137.0 mm (5.4 in), 21 August 1982 Aug Sep: 114.4 mm (4.5 in), 27 September 2008 Sep Oct: 140.1 mm (5.5 in), 8 October 2006 Oct Nov: 83.3 mm (3.3 in), 24 November 2017 Nov Dec: 56.2 mm (2.2 in), 28 December 1983 Dec
The wettest day on record for each calendar month at Lancang. The most was 140.1 mm (5.5 in) on 8 October 2006.
Record daily precipitation for each month at Lancang
MonthRecord daily precipitation (mm)Date
Jan102.1 mm (4.0 in)9 January 2015
Feb30.7 mm (1.2 in)25 February 2016
Mar53.8 mm (2.1 in)8 March 1973
Apr53.8 mm (2.1 in)29 April 1999
May95.2 mm (3.7 in)18 May 1970
Jun134.6 mm (5.3 in)22 June 1984
Jul136.1 mm (5.4 in)31 July 1958
Aug137.0 mm (5.4 in)21 August 1982
Sep114.4 mm (4.5 in)27 September 2008
Oct140.1 mm (5.5 in)8 October 2006
Nov83.3 mm (3.3 in)24 November 2017
Dec56.2 mm (2.2 in)28 December 1983

Period of Record Coverage

1954 to 2025
Days with data per year at Lancang 72 years of record at Lancang, 1954 to 2025. 1 years have data for under 90 percent of days and are left out of rankings: 2025. 1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 364 of 365 days1964: 366 of 366 days1965: 364 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 363 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 364 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 365 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 363 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 361 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 362 of 365 days2015: 365 of 365 days2016: 360 of 366 days2017: 363 of 365 days2018: 356 of 365 days2019: 362 of 365 days2020: 366 of 366 days2021: 358 of 365 days2022: 361 of 365 days2023: 347 of 365 days2024: 344 of 366 days2025: 235 of 365 days1960197019801990200020102020
72 years of record at Lancang, 1954 to 2025. 1 years have data for under 90 percent of days and are left out of rankings: 2025.
Days with data per year at Lancang
YearDays with dataShare of yearComplete
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963364100%Yes
1964366100%Yes
1965364100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198636399%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
1993364100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000365100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
200536399%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
201136199%Yes
2012366100%Yes
2013365100%Yes
201436299%Yes
2015365100%Yes
201636098%Yes
201736399%Yes
201835698%Yes
201936299%Yes
2020366100%Yes
202135898%Yes
202236199%Yes
202334795%Yes
202434494%Yes
202523564%No

Latest Records

20
Latest records at Lancang
DateStationRecordValueBeat old record byOld record stoodSignificance
1 August 2025Lancang, CNdaily high min22.2 C (72.0 F)0.1 C (0.2 F)16 years12 of 100 (Routine)
19 July 2025Lancang, CNdaily high min (Tie)22.1 C (71.8 F)tie16 years2 of 100 (Routine)
2 July 2025Lancang, CNdaily rain66.0 mm (2.6 in)16.5 mm (0.6 in)64 years37 of 100 (Notable)
15 June 2025Lancang, CNdaily high min22.3 C (72.1 F)0.3 C (0.5 F)4 years10 of 100 (Routine)
13 June 2025Lancang, CNdaily high max33.2 C (91.8 F)0.2 C (0.4 F)12 years10 of 100 (Routine)
12 June 2025Lancang, CNdaily high max (Tie)32.1 C (89.8 F)tie0 years1 of 100 (Routine)
10 June 2025Lancang, CNdaily rain65.5 mm (2.6 in)3.1 mm (0.12 in)30 years18 of 100 (Routine)
9 June 2025Lancang, CNdaily high max33.7 C (92.7 F)0.2 C (0.4 F)60 years25 of 100 (Routine)
8 June 2025Lancang, CNdaily high max33.7 C (92.7 F)0.1 C (0.2 F)8 years9 of 100 (Routine)
1 May 2025Lancang, CNdaily low max25.0 C (77.0 F)0.3 C (0.5 F)39 years19 of 100 (Routine)
12 April 2025Lancang, CNdaily high min18.5 C (65.3 F)1.3 C (2.3 F)12 years15 of 100 (Routine)
7 April 2025Lancang, CNdaily rain28.4 mm (1.1 in)19.7 mm (0.8 in)56 years52 of 100 (Notable)
7 April 2025Lancang, CNdaily high min16.5 C (61.7 F)0.2 C (0.4 F)0 years7 of 100 (Routine)
5 April 2025Lancang, CNdaily high min16.5 C (61.7 F)0.5 C (0.9 F)8 years11 of 100 (Routine)
4 April 2025Lancang, CNdaily high min16.2 C (61.2 F)0.1 C (0.2 F)55 years23 of 100 (Routine)
21 March 2025Lancang, CNdaily low max21.3 C (70.3 F)3.7 C (6.7 F)71 years44 of 100 (Notable)
21 March 2025Lancang, CNdaily rain3.8 mm (0.15 in)1.5 mm (0.06 in)56 years20 of 100 (Routine)
25 February 2025Lancang, CNdaily high min14.4 C (57.9 F)0.4 C (0.7 F)33 years17 of 100 (Routine)
28 December 2024Lancang, CNdaily high max26.6 C (79.9 F)0.8 C (1.4 F)26 years17 of 100 (Routine)
27 December 2024Lancang, CNdaily high max26.6 C (79.9 F)0.7 C (1.3 F)59 years26 of 100 (Routine)

Climate Trend

64 complete years, 1954 to 2024
Annual mean temperature at Lancang as warming stripes, 1954 to 2024 One stripe for each of 64 complete years at Lancang, 1954 to 2024. Blue stripes are years cooler than the station's own mean of 21.0 C (69.9 F); red stripes are warmer. The coolest year was 1955, at 20.2 C (68.4 F), and the warmest was 2024, at 22.7 C (72.9 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1954: 20.5 C, -0.5 C from the station mean1955: 20.2 C, -0.8 C from the station mean1956: 20.4 C, -0.7 C from the station mean1957: 20.3 C, -0.7 C from the station mean1958: 20.4 C, -0.6 C from the station mean1959: 20.3 C, -0.7 C from the station mean1960: 21.0 C, -0.1 C from the station mean1961: 20.6 C, -0.4 C from the station mean1962: 20.7 C, -0.4 C from the station mean1963: 20.5 C, -0.6 C from the station mean1964: 20.5 C, -0.6 C from the station mean1965: 20.4 C, -0.7 C from the station mean1966: 20.9 C, -0.1 C from the station mean1967: 20.5 C, -0.6 C from the station mean1968: 20.4 C, -0.6 C from the station mean1969: 20.7 C, -0.3 C from the station mean1970: 20.7 C, -0.3 C from the station mean1971: 20.2 C, -0.8 C from the station mean1972: 20.8 C, -0.2 C from the station mean1973: 20.9 C, -0.2 C from the station mean1974: 20.6 C, -0.5 C from the station mean1975: 20.6 C, -0.4 C from the station mean1976: 20.4 C, -0.7 C from the station mean1977: 20.4 C, -0.6 C from the station mean1978: 20.7 C, -0.4 C from the station mean1979: 20.9 C, -0.2 C from the station mean1980: 21.0 C, -0.1 C from the station mean1981: 21.1 C, 0.0 C from the station mean1982: 20.7 C, -0.3 C from the station mean1983: 20.8 C, -0.3 C from the station mean1984: 21.1 C, 0.0 C from the station mean1985: 20.8 C, -0.3 C from the station mean1986: 20.7 C, -0.3 C from the station mean1987: 21.1 C, 0.0 C from the station mean1988: 21.1 C, +0.1 C from the station mean1989: 21.0 C, -0.1 C from the station mean1990: 20.9 C, -0.1 C from the station mean1991: 21.2 C, +0.1 C from the station mean1992: 20.5 C, -0.6 C from the station mean1993: 20.8 C, -0.2 C from the station mean1994: 21.2 C, +0.2 C from the station mean1995: 21.3 C, +0.3 C from the station mean1996: 21.2 C, +0.2 C from the station mean1997: 20.9 C, -0.2 C from the station mean1998: 21.6 C, +0.6 C from the station mean1999: 21.5 C, +0.5 C from the station mean2000: 21.1 C, +0.1 C from the station mean2001: 21.5 C, +0.4 C from the station mean2002: 21.4 C, +0.3 C from the station mean2003: 21.5 C, +0.5 C from the station mean2004: 21.1 C, 0.0 C from the station mean2005: 21.6 C, +0.6 C from the station mean2006: 21.4 C, +0.3 C from the station mean2007: 21.2 C, +0.2 C from the station mean2008: 21.4 C, +0.4 C from the station mean2009: 21.7 C, +0.7 C from the station mean2010: 22.1 C, +1.0 C from the station mean2011: 21.6 C, +0.6 C from the station mean2012: 22.0 C, +0.9 C from the station mean2020: 22.3 C, +1.2 C from the station mean2021: 22.2 C, +1.1 C from the station mean2022: 22.2 C, +1.1 C from the station mean2023: 22.7 C, +1.6 C from the station mean2024: 22.7 C, +1.7 C from the station mean19541960197019801990200020102020
One stripe for each of 64 complete years at Lancang, 1954 to 2024. Blue stripes are years cooler than the station's own mean of 21.0 C (69.9 F); red stripes are warmer. The coolest year was 1955, at 20.2 C (68.4 F), and the warmest was 2024, at 22.7 C (72.9 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Lancang as warming stripes, 1954 to 2024
YearAnnual mean temperatureDifference from the station mean
195420.5 C-0.50 C
195520.2 C-0.83 C
195620.4 C-0.66 C
195720.3 C-0.74 C
195820.4 C-0.64 C
195920.3 C-0.71 C
196021.0 C-0.08 C
196120.6 C-0.41 C
196220.7 C-0.35 C
196320.5 C-0.56 C
196420.5 C-0.55 C
196520.4 C-0.66 C
196620.9 C-0.14 C
196720.5 C-0.55 C
196820.4 C-0.62 C
196920.7 C-0.33 C
197020.7 C-0.30 C
197120.2 C-0.83 C
197220.8 C-0.20 C
197320.9 C-0.15 C
197420.6 C-0.47 C
197520.6 C-0.42 C
197620.4 C-0.67 C
197720.4 C-0.60 C
197820.7 C-0.37 C
197920.9 C-0.18 C
198021.0 C-0.05 C
198121.1 C+0.05 C
198220.7 C-0.30 C
198320.8 C-0.25 C
198421.1 C+0.03 C
198520.8 C-0.28 C
198620.7 C-0.31 C
198721.1 C+0.02 C
198821.1 C+0.08 C
198921.0 C-0.08 C
199020.9 C-0.09 C
199121.2 C+0.13 C
199220.5 C-0.58 C
199320.8 C-0.19 C
199421.2 C+0.19 C
199521.3 C+0.29 C
199621.2 C+0.20 C
199720.9 C-0.15 C
199821.6 C+0.60 C
199921.5 C+0.46 C
200021.1 C+0.07 C
200121.5 C+0.45 C
200221.4 C+0.35 C
200321.5 C+0.49 C
200421.1 C+0.02 C
200521.6 C+0.60 C
200621.4 C+0.34 C
200721.2 C+0.16 C
200821.4 C+0.36 C
200921.7 C+0.69 C
201022.1 C+1.02 C
201121.6 C+0.57 C
201222.0 C+0.93 C
202022.3 C+1.22 C
202122.2 C+1.13 C
202222.2 C+1.14 C
202322.7 C+1.62 C
202422.7 C+1.69 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.3) per decade over 1954 to 2024. In Fahrenheit: 0.5 F (0.4 to 0.5) per decade. The slope is a straight line fitted to 64 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Lancang
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.2 to 0.3) per decade0.5 F (0.4 to 0.5) per decade1954 to 202464Rise
Mean daily maximum0.2 C (0.1 to 0.2) per decade0.3 F (0.2 to 0.4) per decade1954 to 202464Rise
Mean daily minimum0.4 C (0.3 to 0.4) per decade0.6 F (0.6 to 0.7) per decade1954 to 202464Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1954 to 2025
Yearly extremes at Lancang: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.2 C (99.0 F)195835.0 C (95.0 F)72
Coldest night (TNn)-1.4 C (29.5 F)19992.9 C (37.2 F)72
Wettest day (Rx1day)140.1 mm (5.5 in)200677.3 mm (3.0 in)72
Wettest five days (Rx5day)276.3 mm (10.9 in)2006150.6 mm (5.9 in)72
Longest dry spell (CDD)92 days198041 days72

Hottest day (TXx)

Hottest day (TXx) at Lancang by year The hottest day of the year at Lancang, 1954 to 2025. The record is 37.2 C (99.0 F) in 1958, marked on the chart; the median year is 35.0 C (95.0 F). 323436381960198020002020Record: 37.2 C (99.0 F) in 1958
The hottest day of the year at Lancang, 1954 to 2025. The record is 37.2 C (99.0 F) in 1958, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Lancang by year
YearHottest day (TXx)
195437.0 C (98.6 F)
195535.4 C (95.7 F)
195634.5 C (94.1 F)
195735.7 C (96.3 F)
195837.2 C (99.0 F)
195933.7 C (92.7 F)
196037.1 C (98.8 F)
196136.2 C (97.2 F)
196235.0 C (95.0 F)
196335.1 C (95.2 F)
196433.7 C (92.7 F)
196534.6 C (94.3 F)
196635.7 C (96.3 F)
196733.9 C (93.0 F)
196833.1 C (91.6 F)
196936.2 C (97.2 F)
197034.9 C (94.8 F)
197134.8 C (94.6 F)
197235.1 C (95.2 F)
197334.6 C (94.3 F)
197433.1 C (91.6 F)
197535.3 C (95.5 F)
197632.5 C (90.5 F)
197734.4 C (93.9 F)
197834.3 C (93.7 F)
197936.7 C (98.1 F)
198035.4 C (95.7 F)
198133.5 C (92.3 F)
198235.2 C (95.4 F)
198336.2 C (97.2 F)
198435.9 C (96.6 F)
198534.6 C (94.3 F)
198635.1 C (95.2 F)
198736.4 C (97.5 F)
198835.4 C (95.7 F)
198935.4 C (95.7 F)
199034.0 C (93.2 F)
199134.5 C (94.1 F)
199235.8 C (96.4 F)
199333.4 C (92.1 F)
199434.5 C (94.1 F)
199535.3 C (95.5 F)
199633.8 C (92.8 F)
199736.8 C (98.2 F)
199836.8 C (98.2 F)
199936.3 C (97.3 F)
200033.8 C (92.8 F)
200134.8 C (94.6 F)
200234.3 C (93.7 F)
200334.0 C (93.2 F)
200433.4 C (92.1 F)
200536.2 C (97.2 F)
200634.5 C (94.1 F)
200733.6 C (92.5 F)
200834.8 C (94.6 F)
200934.4 C (93.9 F)
201035.0 C (95.0 F)
201133.2 C (91.8 F)
201236.0 C (96.8 F)
201335.4 C (95.7 F)
201436.4 C (97.5 F)
201534.3 C (93.7 F)
201634.2 C (93.6 F)
201735.0 C (95.0 F)
201833.1 C (91.6 F)
201937.2 C (99.0 F)
202035.3 C (95.5 F)
202136.0 C (96.8 F)
202233.7 C (92.7 F)
202336.3 C (97.3 F)
202435.9 C (96.6 F)
202534.1 C (93.4 F)

Coldest night (TNn)

Coldest night (TNn) at Lancang by year The coldest night of the year at Lancang, 1954 to 2025. The record is -1.4 C (29.5 F) in 1999, marked on the chart; the median year is 2.9 C (37.2 F). -2.502.557.51960198020002020Record: -1.4 C (29.5 F) in 1999
The coldest night of the year at Lancang, 1954 to 2025. The record is -1.4 C (29.5 F) in 1999, marked on the chart; the median year is 2.9 C (37.2 F).
Coldest night (TNn) at Lancang by year
YearColdest night (TNn)
19540.3 C (32.5 F)
19550.4 C (32.7 F)
19560.5 C (32.9 F)
19570.6 C (33.1 F)
19582.0 C (35.6 F)
19591.6 C (34.9 F)
19603.7 C (38.7 F)
19612.1 C (35.8 F)
19621.4 C (34.5 F)
1963-0.3 C (31.5 F)
19640.5 C (32.9 F)
19651.9 C (35.4 F)
19663.1 C (37.6 F)
19673.7 C (38.7 F)
19681.7 C (35.1 F)
19691.5 C (34.7 F)
19701.6 C (34.9 F)
19712.9 C (37.2 F)
19722.6 C (36.7 F)
19731.6 C (34.9 F)
1974-1.0 C (30.2 F)
19751.4 C (34.5 F)
19763.0 C (37.4 F)
19771.9 C (35.4 F)
19780.5 C (32.9 F)
19790.3 C (32.5 F)
19801.4 C (34.5 F)
19813.2 C (37.8 F)
19822.4 C (36.3 F)
19832.9 C (37.2 F)
19843.8 C (38.8 F)
19852.1 C (35.8 F)
19862.6 C (36.7 F)
19873.5 C (38.3 F)
19883.2 C (37.8 F)
19892.6 C (36.7 F)
19902.0 C (35.6 F)
19912.9 C (37.2 F)
19923.2 C (37.8 F)
19931.6 C (34.9 F)
19942.7 C (36.9 F)
19953.7 C (38.7 F)
19963.3 C (37.9 F)
19971.8 C (35.2 F)
19982.4 C (36.3 F)
1999-1.4 C (29.5 F)
20002.9 C (37.2 F)
20012.4 C (36.3 F)
20024.1 C (39.4 F)
20033.9 C (39.0 F)
20043.0 C (37.4 F)
20054.6 C (40.3 F)
20064.0 C (39.2 F)
20074.0 C (39.2 F)
20083.7 C (38.7 F)
20093.7 C (38.7 F)
20103.5 C (38.3 F)
20114.8 C (40.6 F)
20123.8 C (38.8 F)
20132.6 C (36.7 F)
20143.3 C (37.9 F)
20154.6 C (40.3 F)
20165.1 C (41.2 F)
20173.6 C (38.5 F)
20184.5 C (40.1 F)
20193.4 C (38.1 F)
20203.7 C (38.7 F)
20216.3 C (43.3 F)
20225.5 C (41.9 F)
20235.1 C (41.2 F)
20247.0 C (44.6 F)
20257.0 C (44.6 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Lancang by year The wettest day of the year at Lancang, 1954 to 2025. The record is 140.1 mm (5.5 in) in 2006, marked on the chart; the median year is 77.3 mm (3.0 in). 2550751001251501960198020002020Record: 140.1 mm (5.5 in) in 2006
The wettest day of the year at Lancang, 1954 to 2025. The record is 140.1 mm (5.5 in) in 2006, marked on the chart; the median year is 77.3 mm (3.0 in).
Wettest day (Rx1day) at Lancang by year
YearWettest day (Rx1day)
195459.3 mm (2.3 in)
195553.1 mm (2.1 in)
195682.7 mm (3.3 in)
195768.6 mm (2.7 in)
1958136.1 mm (5.4 in)
195976.1 mm (3.0 in)
196077.8 mm (3.1 in)
196168.0 mm (2.7 in)
196286.3 mm (3.4 in)
196364.6 mm (2.5 in)
196468.9 mm (2.7 in)
196582.0 mm (3.2 in)
196668.4 mm (2.7 in)
196767.4 mm (2.7 in)
196892.1 mm (3.6 in)
196991.7 mm (3.6 in)
197095.2 mm (3.7 in)
197187.6 mm (3.4 in)
197285.7 mm (3.4 in)
197371.0 mm (2.8 in)
197475.1 mm (3.0 in)
197564.1 mm (2.5 in)
197662.0 mm (2.4 in)
197786.6 mm (3.4 in)
197847.0 mm (1.9 in)
197963.5 mm (2.5 in)
198072.8 mm (2.9 in)
198171.4 mm (2.8 in)
1982137.0 mm (5.4 in)
198398.7 mm (3.9 in)
1984134.6 mm (5.3 in)
198579.1 mm (3.1 in)
198688.6 mm (3.5 in)
198793.5 mm (3.7 in)
198899.0 mm (3.9 in)
198964.3 mm (2.5 in)
199084.3 mm (3.3 in)
199151.9 mm (2.0 in)
199261.2 mm (2.4 in)
1993110.6 mm (4.4 in)
199483.7 mm (3.3 in)
199562.4 mm (2.5 in)
199678.2 mm (3.1 in)
199745.8 mm (1.8 in)
199856.1 mm (2.2 in)
199998.8 mm (3.9 in)
200087.0 mm (3.4 in)
200157.5 mm (2.3 in)
200271.1 mm (2.8 in)
200391.6 mm (3.6 in)
200471.8 mm (2.8 in)
2005116.5 mm (4.6 in)
2006140.1 mm (5.5 in)
200754.2 mm (2.1 in)
2008114.4 mm (4.5 in)
2009103.7 mm (4.1 in)
201057.4 mm (2.3 in)
201161.4 mm (2.4 in)
201276.8 mm (3.0 in)
201382.5 mm (3.2 in)
201465.5 mm (2.6 in)
2015102.1 mm (4.0 in)
201667.3 mm (2.6 in)
201783.3 mm (3.3 in)
201892.2 mm (3.6 in)
2019118.6 mm (4.7 in)
202096.5 mm (3.8 in)
202153.1 mm (2.1 in)
2022105.4 mm (4.1 in)
202355.6 mm (2.2 in)
202453.1 mm (2.1 in)
202566.0 mm (2.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lancang by year The wettest five days of the year at Lancang, 1954 to 2025. The record is 276.3 mm (10.9 in) in 2006, marked on the chart; the median year is 150.6 mm (5.9 in). 501001502002503001960198020002020Record: 276.3 mm (10.9 in) in 2006
The wettest five days of the year at Lancang, 1954 to 2025. The record is 276.3 mm (10.9 in) in 2006, marked on the chart; the median year is 150.6 mm (5.9 in).
Wettest five days (Rx5day) at Lancang by year
YearWettest five days (Rx5day)
1954141.9 mm (5.6 in)
1955154.4 mm (6.1 in)
1956182.0 mm (7.2 in)
1957169.4 mm (6.7 in)
1958172.7 mm (6.8 in)
1959216.6 mm (8.5 in)
1960168.8 mm (6.6 in)
1961134.4 mm (5.3 in)
1962137.6 mm (5.4 in)
1963124.2 mm (4.9 in)
1964144.4 mm (5.7 in)
1965177.5 mm (7.0 in)
1966206.4 mm (8.1 in)
1967137.8 mm (5.4 in)
1968144.3 mm (5.7 in)
1969149.3 mm (5.9 in)
1970190.0 mm (7.5 in)
1971203.5 mm (8.0 in)
1972170.6 mm (6.7 in)
1973138.8 mm (5.5 in)
1974137.2 mm (5.4 in)
1975105.2 mm (4.1 in)
1976118.7 mm (4.7 in)
1977134.0 mm (5.3 in)
1978108.3 mm (4.3 in)
1979114.6 mm (4.5 in)
1980122.9 mm (4.8 in)
1981167.4 mm (6.6 in)
1982206.2 mm (8.1 in)
1983183.2 mm (7.2 in)
1984203.3 mm (8.0 in)
1985191.9 mm (7.6 in)
1986160.6 mm (6.3 in)
1987160.9 mm (6.3 in)
1988156.8 mm (6.2 in)
1989148.0 mm (5.8 in)
1990160.1 mm (6.3 in)
1991115.1 mm (4.5 in)
1992141.9 mm (5.6 in)
1993177.5 mm (7.0 in)
1994173.1 mm (6.8 in)
1995125.2 mm (4.9 in)
1996180.0 mm (7.1 in)
1997111.3 mm (4.4 in)
1998146.2 mm (5.8 in)
1999143.5 mm (5.6 in)
2000156.4 mm (6.2 in)
2001143.1 mm (5.6 in)
2002151.8 mm (6.0 in)
2003114.0 mm (4.5 in)
2004163.6 mm (6.4 in)
2005229.3 mm (9.0 in)
2006276.3 mm (10.9 in)
2007136.6 mm (5.4 in)
2008121.2 mm (4.8 in)
2009142.4 mm (5.6 in)
201096.7 mm (3.8 in)
2011144.8 mm (5.7 in)
2012174.9 mm (6.9 in)
2013175.9 mm (6.9 in)
2014176.0 mm (6.9 in)
2015179.4 mm (7.1 in)
2016123.9 mm (4.9 in)
2017122.4 mm (4.8 in)
2018208.1 mm (8.2 in)
2019178.6 mm (7.0 in)
2020163.6 mm (6.4 in)
2021141.7 mm (5.6 in)
2022145.2 mm (5.7 in)
2023127.3 mm (5.0 in)
2024153.2 mm (6.0 in)
2025138.6 mm (5.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lancang by year The longest dry spell of the year at Lancang, 1954 to 2025. The record is 92 days in 1980, marked on the chart; the median year is 41 days. 02550751001960198020002020Record: 92 days in 1980
The longest dry spell of the year at Lancang, 1954 to 2025. The record is 92 days in 1980, marked on the chart; the median year is 41 days.
Longest dry spell (CDD) at Lancang by year
YearLongest dry spell (CDD)
195425 days
195530 days
195670 days
195758 days
195840 days
195935 days
196029 days
196140 days
196255 days
196338 days
196457 days
196534 days
196671 days
196731 days
196826 days
196967 days
197059 days
197133 days
197252 days
197340 days
197477 days
197543 days
197638 days
197737 days
197854 days
197939 days
198092 days
198126 days
198243 days
198338 days
198476 days
198548 days
198660 days
198726 days
198853 days
198965 days
199046 days
199157 days
199233 days
199344 days
199447 days
199564 days
199633 days
199750 days
199843 days
199942 days
200032 days
200150 days
200222 days
200362 days
200464 days
200554 days
200645 days
200758 days
200835 days
200982 days
201037 days
201144 days
201250 days
20136 days
20144 days
20155 days
20164 days
20174 days
20184 days
201922 days
202038 days
202129 days
202228 days
202332 days
202426 days
202553 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

64 years, 1954 to 2024

A day with at least 76.0 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 154.2 mm (6.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Lancang: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years76.0 mm (3.0 in)
5 years96.4 mm (3.8 in)
10 years110.2 mm (4.3 in)
25 years127.8 mm (5.0 in)
50 years141.0 mm (5.6 in)
100 years154.2 mm (6.1 in)Longer than the 64 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 64 years of values from 1954 to 2024.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 140.1 mm (5.5 in) in 2006; 137.0 mm (5.4 in) in 1982; 136.1 mm (5.4 in) in 1958.

Climate Twins

2003 to 2024 against 1961 to 1990

Over 2003 to 2024, Lancang had a mean temperature of 21.8 C (71.3 F) and 1,528.4 mm (60.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Chicontepec de Tejeda (Dge) (Mexico, 14,792 km away), Fraccionamiento Callejones (Mexico, 14,545 km away) and San Dieguito (Mexico, 14,644 km away).

Climate twins of Lancang: stations whose 1961 to 1990 climate is closest to its 2003 to 2024 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Chicontepec de Tejeda (Dge)Mexico14,792 km (9,191 mi)21.6 C (70.8 F)1,501.7 mm (59.1 in)0.53
Fraccionamiento CallejonesMexico14,545 km (9,038 mi)22.1 C (71.7 F)1,574.4 mm (62.0 in)0.78
San DieguitoMexico14,644 km (9,099 mi)22.5 C (72.6 F)1,453.0 mm (57.2 in)0.96

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Lancang standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lancang threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).